Update app.py

app.py

@@ -21,7 +21,8 @@ def chat(prompt):
         max_length=1024,
         num_return_sequences=1,
         top_p=0.9,
-        top_k=1,
+        top_k=50,
+        num_beams=2,
         pad_token_id=model.config.eos_token_id
     )